NoGUI: Start in fullscreen when option or command line flag is set

src/frontend-common/common_host_interface.cpp

@@ -304,6 +304,7 @@ bool CommonHostInterface::ParseCommandLineParameters(int argc, char* argv[],
       else if (CHECK_ARG("-fullscreen"))
       {
         Log_InfoPrintf("Going fullscreen after booting.");
+        m_command_line_flags.start_fullscreen = true;
         force_fullscreen = true;
         continue;
       }

src/frontend-common/common_host_interface.h

@@ -405,6 +405,9 @@ protected:
 
     // disable controller interface (buggy devices with SDL)
     BitField<u8, bool, 1, 1> disable_controller_interface;
+
+    // starting fullscreen (outside of boot options)
+    BitField<u8, bool, 2, 1> start_fullscreen;
   } m_command_line_flags = {};
 
 private: